[CRYPTO] sha512: Hardware acceleration for s390

Exploit the System z10 hardware acceleration for SHA512.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 6d2f0c8..ea7b190 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -101,6 +101,17 @@
 	  This version of SHA implements a 256 bit hash with 128 bits of
 	  security against collision attacks.
 
+config CRYPTO_SHA512_S390
+	tristate "SHA512 digest algorithm"
+	depends on S390
+	select CRYPTO_ALGAPI
+	help
+	  This is the s390 hardware accelerated implementation of the
+	  SHA512 secure hash standard.
+
+	  This version of SHA implements a 512 bit hash with 256 bits of
+	  security against collision attacks.
+
 config CRYPTO_DES_S390
 	tristate "DES and Triple DES cipher algorithms"
 	depends on S390